When a piece of iron at 25 degrees Celcius is dropped into a glass of water, whose temperature is 15 degrees Celcius, the heat will flow from the iron to the water in the glass until both reach the same temperature. This is because the one that is warmer would release more energy to the colder one.
Answer: Heat will flow from the iron to the water in the glass until both reach the same temperature
Credit to: @Samuelkenobi11
